div
{
  /* numbers */
  font-size: 10.0;
  font-size: +2;
  margin-top: -100;
  
  /* percentages */
  font-size: 100%;
  font-size: +20%;
  font-size: -10%;
  
  /* odd dimensions */
  padding-top: 100foo;
  padding-bottom: 200smoots;
  
  /* lengths */
  margin-left: 40px;
  margin-left: 40pt;
  margin-left: 40pc;
  margin-left: 40mm;
  margin-left: 40cm;
  margin-left: 40in;
  margin-left: -40px;
  margin-left: +4in;
  
  /* EMS */
  margin-bottom: 4em;
  margin-bottom: +4em;
  margin-bottom: -4em;
  
  /* EXS */
  padding-bottom: 4ex;
  padding-bottom: +4ex;
  padding-bottom: -4ex;
  
  /* angles */
  rotate: 200deg;
  rotate: +90deg;
  rotate: -90deg;
  rotate: 1.414rad;
  rotate: 0.2grad;
  
  /* time */
  delay: 2000ms;
  delay: 5s;
  later: -60s;
  now: +6ms;
  
  /* frequency */
  cycle: 107.7khz;
  frequency: 200hz;
  frequency: -10hz;
  frequency: +5khz;
  
  /* function */
  font-size: sin(3.1415929);
  font-size: -cos(1.414);
  font-size: +rnd(200);
  
  /* string, ident, uri, rgb, unicode range, hexcolor */
  foo: "now is the time";
  bar: toledo;
  ack: url(http://msn.com/icon.ico);
  color: rgb(255,204,102);
  chars: U+11E00-121FF;
  color: #123456;
  
  font: normal 14px/18px Segoe UI Regular; /* the UI string should be an identifier, NOT a Unicode Range */
}